These entries are queried from radb.net using whois, you can try my project getting these.
:AS16623 route: 139.48.0.0/16 descr: Alberta Health Services origin: AS16623 mnt-by: CYBERA-AB-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.199.0.0/16 descr: Alberta Health Services origin: AS16623 mnt-by: CYBERA-AB-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.161.2.0/24 descr: Alberta Health Services origin: AS16623 mnt-by: CYBERA-AB-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.161.3.0/24 descr: Alberta Health Services origin: AS16623 mnt-by: CYBERA-AB-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.161.4.0/24 descr: Alberta Health Services origin: AS16623 mnt-by: CYBERA-AB-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.161.12.0/24 descr: Alberta Health Services origin: AS16623 mnt-by: CYBERA-AB-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.161.13.0/24 descr: Alberta Health Services origin: AS16623 mnt-by: CYBERA-AB-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.48.240.0/24 descr: CT Global Center hosted origin: AS16623 mnt-by: CLICKTHINGS-MNT changed: dustin [at] clickthings.com 20000913 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source